Labeller

The label text desired on the output geometry.

If this parameter is set to Yes, labels will only be generated if they don’t overlap with other labels already generated by the same transformer. If it is set to No, overlapping labels will be generated.

The Label Position controls where the label will be placed relative to the original line.  

• If Above or Left is specified, then the points are located the <offset> distance above (or, if the line is vertical, to the left of) the line. Above or Right is identical, except if the line is vertical then label point will then be to the right of the linear feature.
• Below or Left and Below or Right work similarly with all label points being below the linear feature unless it is vertical. If it is vertical, then the label points are to the left and right, respectively.
• If Right is specified, then the label is always placed on the right side of the line.
• If Left is specified, then the label is always placed on the left side of the line.

The labels will be placed Label Offset units perpendicular to the closest point on the line, where the offset is also measured in ground units. You can either enter a number, or take the value of a feature attribute by selecting the attribute name from the pull-down list.

This parameter controls whether or not labels will be placed at the end points of the line. If not, then the labels will start half the label spacing from the start of the line.

This parameter controls the height of the labels, measured in ground units. You can either enter a number, or take the value of a feature attribute by selecting the attribute name from the pull-down list.

This parameter controls the average character width. If left as the default, 0.0, the Label Height will also be used as the average character width.

This parameter controls the interval of the labels. A label spacing of 0 will result in a single label being placed at the midpoint of the line. You can either enter a number, or take the value of a feature attribute by selecting the attribute name from the pull-down list.

This parameter sets a length threshold. If a line does not meet the minimum length requirement, no labels will be generated for it.

This is the name of the attribute which will hold the rotation of the label. This rotation is adjusted from the orientation of the line so that text oriented at the label point will be parallel to the line segment and will not be upside down or right-to-left.

All rotations are measured in degrees counterclockwise from horizontal.

This is the name of the attribute which will hold the rotation of the line itself at the point being labeled.

All rotations are measured in degrees counterclockwise from horizontal.

Using the Text Editor

The Text Editor provides a convenient way to construct text strings (including regular expressions) from various data sources, such as attributes, parameters, and constants, where the result is used directly inside a parameter.

Text Editor

Using the Arithmetic Editor

The Arithmetic Editor provides a convenient way to construct math expressions from various data sources, such as attributes, parameters, and feature functions, where the result is used directly inside a parameter.

Arithmetic Editor

Conditional Values

Set values depending on one or more test conditions that either pass or fail.

Parameter Condition Definition Dialog

Content

Expressions and strings can include a number of functions, characters, parameters, and more.

When setting values - whether entered directly in a parameter or constructed using one of the editors - strings and expressions containing String, Math, Date/Time or FME Feature Functions will have those functions evaluated. Therefore, the names of these functions (in the form @<function_name>) should not be used as literal string values.

Content Types

String Functions	These functions manipulate and format strings.
Special Characters	A set of control characters is available in the Text Editor.
Math Functions	Math functions are available in both editors.
Date/Time Functions	Date and time functions are available in the Text Editor.
Math Operators	These operators are available in the Arithmetic Editor.
FME Feature Functions	These return primarily feature-specific values.
FME Parameters	FME and workspace-specific parameters may be used.
Creating and Modifying User Parameters	Create your own editable parameters.

Note: Not all tools are available in all transformers.